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Amiga, W36. F. DE QUERVAIN OPERATING TABLE 6 Sheets-Shet 2 Filed Feb. 23, 1933 (Ill/I 4 KN m 11% ME W ME f WW M M Y m5 W April 2L 1936. F. DE QUERVAIN 240379883 OPERATING. TABLE F iled Feb. 23, 1955 6 Sheets-Sheet 5 Q6 Fig 5 l! H? mm! \HHHHHHI llllll mlv A/To/g TQ/T DE QUE/2 mm AFTER TL93(55- F. DE QUERVAIN 2,37,888

OPERATING TABLE Filed Feb. 25, 1953 6 Sheets-Sheet H TTOE/x EY Aprifl 21, 19%. F. DE QUERVAlN OPERATING TABLE Filed Feb. 25, 1955 6 Sheets-Sheet 5 fig, .9

//V VE N 70 6. F161 TZ D5 pa e wq/N Maw H TTOENE) April 21, 1936. F. DE QUERVAIIN OPERATING TABLE Filed Feb. 23, 1933 6 Sheets-Sheet 6 Patented Apr. 21 1936 UlTED STATES PATENT OFFICE Application February 23, 1933, Serial No. 658,159% In Switzerland February 23;, 1932 3 Claims.

Operating tables with the platform built of separately adjustable parts (head rest, back, seat and leg rest, back and seat being the principal parts) are already known. They have different mechanisms for moving these parts mounted upon the table frame, each of which can be worked wholly independently of the rest.

In known constructions of this kind there is some danger that in certain circumstances the wrong lever may be released-for instance by an unpracticed personand undesired effects brought about. Moreover unnecessary time and trouble are taken in finding the several handles in their various positions. And the many actuating devices (levers, stays, handles and the like) hinder free movement of the operating surgeon around the table and make it diificult to keep the table thoroughly clean.

The purpose of the present invention is to make an operating table safe and convenient to handle by as far as possible centralizing the means required for moving the platform. This central actuating mechanism should provide for: 1. Inclining the platform head downward, 2. Or foot downward, 3. Raising only the back and the head-rest attached to it to sitting position, 4. Lowering the back and head rest alone so that the head is downward, 5. Setting the back and head rest at an upward slant, and inclining the aligned seat and leg rest downward towards the feet, and 6. Tilting the whole platform sideways about its longitudinal axis.

For this purpose according to the invention an operating table having a divided platform of which. the principal parts-back and seatare moved by screws, is so constructed that the lifting, lowering, inclining lengthwise, and tilting sideways of the principal parts is efiected by one mechanism, while the subordinate parts-head and leg-rest-which move with the principal parts can also be separately adjusted.

The accompanying drawings show diagrammatically an example of how the invention may be constructed.

Fig. 1 is an elevation of the table, indicating in broken lines various positions of the several parts.

Fig. la is a plan of the base plate on a smaller scale.

Fig. 2. is a section through the lower part of the table showing the automatic clamp of the lifting plunger.

Fig. 3 is a front View of the central actuating mechanism, and indicates in broken lines a steeply inclined position of the back.

Fig. 4 is a side view of the central actuating mechanism withthe platform carrier and the adjusting screws.

Fig. 5 is a section through the axis of the central actuating mechanism.

Fig. 6 shows an alternative mounting of the 5 actuating crank handle.

Fig. 7 is a horizontal section, and

Fig. 7a. a part vertical section through the single valved pump.

Figs. 8. and 8a. are elevation and plan views respectively of. the leg rest mounting.

Fig. 9 is a plan view of the operating table.

Fig. 10 is a section through the central actuating mechanism along the line I0-I0 of Fig. 1.

Fig. 10a. is a section along the line Illa-Illa of Fig. 10.

Fig. 10b is a section along the line lflb-Illb of Fig. 10.

Fig. 100 is a section along the line l0c-I0c of Fig. 10..

The substructure of the operating table shown comprises a base plate I (Fig. l) which may be replaced by a tripod or like support. This base plate is mounted on rollers 2 the axis of which crosses thelongitudinal axis of the table beneath the centre of gravity, so that when the support screw 3 is slackened the whole table. is approximately in neutral equilibriumv upon these rollers. and so can be shifted from place to place or turned about a vertical axis with very little trouble.

The support screw 3 has a head 5 like a pair of spectacles, so that it may be quickly adjusted by putting the heel in one or other of the two rings 5 and rotating the ring about the axis of the screw. By turning the screw down the weight of the table can be taken off the rollers 2 and thrown upon the screw and two rollers not in line with it, forming with it a three point support.

In a hollow substructure. upon the base plate I (Fig. 2) there is mounted a hydraulic pump which delivers liquid for lifting the plunger on which the superstructure of the table rests. This pump has automatic means for locking the plunger 9 to prevent it sinking. The pump operating lever 6 has a lug 1 projecting to one side which, when the pump pedal 8 and lever 6 are in their uppermost position, presses on the long tail of a pivoted key 10 and forces the key into a slot I I in the lifting plunger 9 so locking it against both axial movement and rotation. The plunger 9 is prevented from moving in the direction of its axis by the pressure exerted by the key 10 against the bottom of the slot H. The release lever [2 which 25 carrier.

is rigidly connected with the lowering pedal I4 is also connected by a link I3 with the arm 6 in such fashion that when the pedal I4 is moved downward, the lever I2 pulls down the arm 6 and 5 so withdraws the key I and releases the plunger 9 before the lever I2 strikes the stem 23 of the release valve.

The valve casing is a readily replaceable unit I (Fig. '7) The pump piston I6 in the cylinder I1 is moved upwards by the spring 63 (Figs. 2

and 7a) and produces suction, which as soon as the ports I8 are uncovered draws in oil and quickly fills the cylinder. Onthe piston I6 descending the oil is forced through the passage I9, lifts the nonreturn valve which is operated by the spring 64 (Fig. '7) and enters the plunger cylinder 22 through the passage 2|.

The upper end of the plunger 9 (Figs. 3 and 4) is pivotally connected by a pin 24 with a carrier 20 25 which can tilt sideways relatively to the longia combination of several actuating members (seen in Fig. 5), viz. a main hollow shaft 33, a shaft 34 carried within the hollow shaft, and a chain sprocket 35 mounted upon the hollow shaft. Any one of these three members may be coupled by a 35 sliding key 36 with a sleeve 31 surrounding the three members at the front of the table. A crank handle 38, connected with the sleeve 37 either directly or through a chain, or gearing 39 (Fig. 6) or other means, turns whichever one of the 40 actuating members is coupled to the sleeve.

Two double armed levers 65, one of which is shown by broken lines in Fig. 3, are rotatably mounted upon the shaft 21. The short arms of the levers 65 support the seat 3I in its horizontal position shown by full lines in Fig. 3. The levers 65 are held in this position by a suitable pin 65a passing through openings formed in the frame 30 and in the levers 65.

If the levers 65 are rotated counter-clockwise (looking in the direction of Fig. 3), they will move out of contact with the seat 3I which will drop to the position shown by broken lines in Fig. 3; the seat 3! is held in this inclined position by any suitable projections provided upon the member 33.

At the crank handle end the hollow shaft 33 (Fig. 5) carries a feather 40. If the key 36 is shifted to engage the feather 40 and the sleeve 3! is turned by the crank handle, the hollow shaft 33 screws into a nut 4I held in the forked end of the plunger 9, and so tilts the carrier 25 and the platform sideways around the pin 24, the other actuating members, shaft 34 and sprocket 35, meanwhile remaining still. If the (35 shaft 34 is coupled with the sleeve 31 by engagement of the key 36 with the feather 43, and turned, the sprocket 44, acting through chain 45 (or toothed wheels) andintermediate sprockets 46, turns the nut 48 (Fig. 4) which is swivelled in 7 the forked end 47 of the frame 36, and so thrusts up or down the threaded rod 49 which is screwed into the nut. By this means the back 28 to which the rod 49 is pivoted is raised or lowered, together with the head rest 66 (Fig. 1) that is hinged upon it, and is separately adjustable. If, as shown in Figs. 4 and 5, the sliding key 36 is in engagement with the walls of a recess formed in the sprocket 35, turning of the sleeve 31 by the crank handle 38 rotates the nut 53 which is swivelled in the stirrup 52 of carrier 25, and so moves the rod 54 up or down. This rod is hinged to the frame 30 which carries the seat and leg rests, and so the frame is correspondingly tilted. As the nut 48 controlling the back is also mounted in the frame 38, it will follow the movements of the frame, but will not itself turn, its actuating member, shaft 34, being stationary. Hence the Whole platform is tilted.

Details of the crank handle mechanism may be seen in Figs. 4 and 5. The crank handle 38 is free when the sliding key 36 is brought to the gap 55 between the feathers of the actuating members. The handle proper, 56, can slide through the crank, and is normally kept in position for use by the spring-pressed stud 58.

Fig. 6 shows an alternative mounting of the actuating crank handle. The device illustrated in this figure comprises the handle proper 56 connected with a bent member 38 which actuates the sleeve 31 by means of the two gear wheels 39-39.

The leg rests 59 (Fig. 8) are mounted on arms 66, they can be removed and replaced by leg clasps 6I. The arms 60 are supported by ball and socket joints 62 approximately beneath the hip joints of the patient, so that the leg rests may be spread wide apart horizontally.

What is claimed as new is:

1. An operating table, comprising an elongated platform having a back section. and a seat section, a support for said platform, a. single handle situated at one of the longitudinal sides of the operating table and below said platform, and means connected with said handle and said platform and adapted to be selectively actuated by said handle either for inclining lengthwise the back section of said platform, or for tilting laterally the entire platform.

2. An operating table, comprising a platform having a back section mounted for relative movement with respect to a seat section, a support,

said platform being pivotally mounted on said support for movement about at least two given horizontal axes, means operatively connecting said platform sections and support, and a single handle connected to said means to selectively actuate said means to incline said platform sections as a unit about one of said horizontal axes or to incline said back section with respect to said seat section.

3. An operating table comprising a platform having a back section mounted for relative movement with respect to a seat section, adjustable head and leg rests connected with said platform, a support, said platform being pivotally mounted on said support for movement about at least two given horizontal axes, means operatively connecting said platform sections and support, and a single handle connected to said means to selectively actuate said means to incline said platform sections as a unit about one of said horizontal axes or to incline said back section with respect 

